地沟油提炼过程中油水渣液固分离工艺研究

目的]探索地沟油炼制过程中油水渣的液一固相物质的分离方法，提高油脂的产出率。方法]分别采用过滤式离心机和螺旋压榨机分离地沟油炼制过程中产生的油水渣，以木屑作为过滤介质进行油水渣的液固分离试验。结果]试验发现，油水渣中的固渣在离心机转鼓上形成致密层，而混有木屑的油水渣在螺旋压榨机中可以连续分离成固渣和油水相。结论]试验有助于油水渣分离工艺的设备选型，采用螺旋压榨技术可成功分离油水渣。木屑可循环套用6～10次，减少了木屑的消耗，降低了因木屑夹带而造成的油脂流失。

Liquid-Solid Separation Technology in Hogwash Oil Refining Process

Objective ] To explore liquid-solid separation technology in hogwash oil refining process and improve the yield of oil. Method ] The filter-type centrifugal machine and screw press machine were used to conduct the separation test, wood scraps were utilized as filter media during the latter. Result ] The solid slag in the hogwash oil deposited on the rotating drum and formed compact layer in the filter-type centrif- ugal machine, but the hogwash oil mixed with wood scraps could be separated to solid and water-oil material. Conclusion ] The experiment showed that the wood scraps could be recycling utilized 6 - 10 times, this reduces the oil loss for wood scraps entrainment.